Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Convertible dishwasher

Active Publication Date: 2013-04-18
WHIRLPOOL CORP
View PDF1 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is a dishwasher with a convertible filtration system that can be used with a universal sump unit. The filtration system can be used in a chopping type dishwasher arrangement or a filtration only dishwasher arrangement. The dishwasher has a check valve cover that divides the recessed main intake into a fluid recirculation chamber and a separate fluid draining chamber. The filtration system removes fine particles from the fluid exiting the accumulator during a dishwashing cycle. The dishwasher can also function as a filtration only unit. The convertible sump unit allows for the replacement of the fine filter system with a non-chopping or fine filter system. The technical effects of the invention include improved filtration, flexibility in dishwasher arrangement, and the ability to use different types of filter systems.

Problems solved by technology

Although chopper systems perform the function of reducing soil size, they also negatively impact the flow of fluid and load on the motor.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Convertible dishwasher
  • Convertible dishwasher
  • Convertible dishwasher

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0024]The manner in which washing fluid is channeled to a drainage pump 230 and recirculation pump 213 will now be discussed with reference to FIG. 7. In a first embodiment, filtration system 202 is utilized in a chopping type dishwashing arrangement. In use, washing fluid flowing into sump unit 50 during the dishwashing cycle will flow by gravity through central main strainer 36′ into recessed main intake 73. Central main strainer 36′ acts as a coarse particle strainer to prevent coarse particles from entering recessed main intake 73. However, washing fluid flowing into recessed main intake 73 may carry fine particles which are carried with the washing fluid into recirculation intake port 80 to a recirculation pump inlet generally indicated at 232 and to a chopper assembly 233. In a manner known in the art, chopper assembly 233 macerates particles entrained within washing fluid to be recirculated to fluid supply hub 206 by recirculation pump 213. Various types of chopping mechanism...

second embodiment

[0027]In a second embodiment, filtration system 202 is utilized in a filtration only dishwashing arrangement. More specifically, when a filtration with accumulator only dishwashing arrangement is desired, accumulator 204 and check valve cover 210 are inserted into recessed main intake 73 in the manner described above, followed by, or as part of, fine filter 212. See FIG. 7. Preferably, bottom wall 212a of fine filter 212 mounts or is otherwise secured to check valve cover 210, and top wall 212b of fine filter 212 extends to accumulator 204 or up to filter screen 36, such that fluid entering upper fluid recirculation chamber 254 from tub 5 is filtered by fine filter 212 before entering recirculation pump inlet 232. In the embodiment shown in FIG. 7, bottom wall 212a of fine filter 212 fits within a filter receiving aperture 257 within check valve cover 210 to secure fine filter 212 to check valve cover 210. However, fine filter 212 could also be made part of check valve cover 210. Pr...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Pressureaaaaaaaaaa
Flow rateaaaaaaaaaa
Login to View More

Abstract

A dishwasher includes a filtration system that can be configured in a chopping or filtration only arrangement. A check valve cover attached to an accumulator is inserted into a main intake of a sump and divides the main intake into a fluid recirculation chamber in communication with a recirculation intake port, and a separate fluid draining chamber in communication with a drain port. When a drain pump is actuated, fluid is pulled from the accumulator through the drain port until pressure within the fluid draining chamber drops below the pressure of the sump and a check valve in the check valve cover is forced open, allowing fluid to be channeled out of the fluid recirculation chamber into the fluid draining chamber. Optionally, a fine filter system can replace the convertible filtration system, whereby the main intake is in fluid communication with both the recirculation intake port and the drain port.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention pertains to the art of dishwashers and, more specifically, to a dishwasher including a sump which can be selectively employed with either a removable filtration system or a chopper pump system.[0003]2. Description of the Related Art[0004]Currently, there are two main wash systems utilized with dishwashers, i.e., chopper systems and filtration systems. In general, in connection with a chopper system, all soils in the washing fluid are directed to a chopping mechanism where the soils are made small enough to pass through the dishwasher's fluid pump, which distributes soil containing fluid to the spray arms of the dishwasher. At least some amount of this soil containing water is diverted to an accumulator / filter where soils are collected and separated from the water. A water nozzle from the spray arm sprays down onto a screen of the accumulator to keep the screen clean over the life of the product. Al...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B08B3/02B08B7/04B08B13/00
CPCA47L15/0047A47L15/4202A47L15/4227A47L15/4225A47L15/4219
Inventor BALINSKI, STEVEN B.FEDDEMA, MARK S.
Owner WHIRLPOOL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com